Leviton,A.E. & Anderson,S.C. 1967. Survey of the reptiles of the Sheikdom of Abu Dhabi, Arabian Peninsula. Part II. Systematic account of the collction of reptiles made in the Sheikdom of Abu Daby by John Gasperetti. Proc. Cal. Acad. Sci. (4) 39: 157-192 - get paper here